An overview of research work on controlling the wear or erosion of different turbine steels using thermal spray coatings has been presented in the paper. It has been observed that there has been consistent and continuous improvement in thermal spray coating over the period of the past 20–25 years. Erosion occurs at the outer surface of blade material because of its surface property, slurry concentration, impact angle, the velocity with which the particle strikes the blade, size, and shape of the particle. Study reveals that resistance to slurry erosion can be increased to a great extent by considering thermal spray hard material coating on the surface of the blade. It is found that the High-Velocity Oxy Fuel (HVOF) sprayed coating technique is used on turbine steel blades to protect them from corrosion. Various types of HVOF coatings used by different researchers are WC-CoCr, Cr3C2-NiCr, Al2O3, Stellite, Cr2O3, Cr3C2-NiCr, NiCrSiB–35wt%WC-Co, W-10Co-4Cr. WC-12Co reduces the porosity of the material and increases the surface strength and resistance to corrosion. By scrutinizing the research and recognizing trends, this paper presents meaningful insight into the erosion behaviour of different nanocomposite ceramic coatings on turbine blades.